Improvement in lathes



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ORLANDO M. emMEs, or `NEWARKNEW JERSEY.

Lene/rs Patent N cada, daad June 29,1869.

- IMPROVEMENT IN LATHES.

The Schedule referred to in these Letters Patent and making part of the name.

To all whom 'it 'may concern:

Be it known that I, ORLANDO M. GnIMEs, of the city of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements inthe Construction of Lathes; and I hereby declare the following to be a full and suiicient description thereof', reference being had to the accompanying drawings, and to the letters ot' reference marked thereon, making a part of this specification.

My improvements relate to that form of lathe in which the work is fed through a hollow mandrel; and consist of suitable means ot' gauging the amount of blank stock -passed through, together with suitable appliances for holding and centring the revolving piece to be operated upon, and forl advancing and withdrawing the tools by .which it is shaped.

In the accompanying drawings, those parts of the lathe which involve no novel points have been omitted.

Let A A, Figure I, represent the mandrel of the lathe, pierced from end to end with the channel lB, for the introduction of the piece to be operated upon.

The end of thismandrcl nearest the cutting-tools is tapered,.and divided by four cuts into as many parts,

as shown at g.

O O is a sleeve, by whose action these parts can be compressed, and caused-to grasp, and, at the same time, centre, any enclosed piece of work.

It is actuated by the lever E E, attached to the ful- Crum Z, as shown in Figure Il.

E E is attached, by the screws S S, to the ring D D, in which C C freely revolves.

My lathe is adapted to the manufacture of an eX- tended variety of articles, but the cutting-toolsshown in the drawing are arranged for the production of a carpet-bag-lock cylinder, of which an enlarged section is shown in Figure llI. a

The blank stock, in the shape of a brass rod, is passed through B, the chuck being relaxed untii it touches the gauge N. The chuck is then tightened, the gauge, which is 'hung on the stud Y, is turned up out of the way, and the flat drill O, and tools P and Q, are moved up until the drill O has pierced a hole through the work, and the tools P and Q have cut the grooves W, as shown in Fig. III.

O, P, and Q, are attached to the stock R, which is actuated by a screw, lever, or other suitable means of moving it steadily buck and forth.

When the stock R is withdrawn, the shaping-tool M, held in the stock or holder H H, is advanced by the action of the lever J, whose movement is regulated by the gauge K, as shown. j

By reversing the movement of this lever, Mis withdrawn, and the cutting-oft' tool L L, attached to the holder I I, is advanced, and the finished piece cut olf.

All of these operations are performed while the lathe is in full motion; andy I find, in actual practice, that the finished pieces can be turned out at the rate ot' seven a minute, and this with a degree ot' ease and certainty nevel before attained.

What I claim as my invention,;a.nd desire to secure 1. The combination of hollow taperedand slotted mandrel A, sleevev G, and lever E, as and for the purpose set forth. v

2. The combination of the tool-holders I and H,

lever J, gauges K and N, as and for the purpose set 

